[][dts: mt7981: add efuse node for gphy calibration]

[Description]
Add efuse node & gphy attributes for gphy calibration

[Release-log]
N/A

Change-Id: I53aaf07fea1c4e3c6b410f6c957a61f55a2275a3
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/5241556
5 files changed